component

XL555

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by Ray

XINLUDA Timers / Clock Oscillators, SOP-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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3D Model

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Datasheet

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Contents

README

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XL555

XINLUDA · Timers / Clock Oscillators · SOP-8

XL555 from XINLUDA, in a SOP-8. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 GND power_in Ground reference (0 V) for the device.
2 TRIG input Trigger input. Start of timing input; when TRIG falls below 1/2 CONT (≈1/3 VDD) the internal flip-flop is set, driving OUT high and opening the DISCH transistor. Input current ≈10 pA typical.
3 OUT output High-current timer output signal (rail-to-rail CMOS). Sink capability 100 mA (max), source ≈10 mA typical.
4 RESET input Active-low reset input. Overrides all other inputs: when driven low the flip-flop is reset, OUT goes low and DISCH is pulled low. Typical VRESET ≈1.1 V; tie to VDD if unused.
5 CONT input Control voltage. Provides access to the internal 2/3 VDD comparator reference node; bypass with a 10 nF capacitor to GND for noise immunity, or drive to modulate the threshold and trigger levels.
6 THRES input Threshold (end-of-timing) input. When THRES rises above CONT (≈2/3 VDD) the flip-flop is reset, OUT goes low and DISCH is pulled low. Input current ≈10 pA typical.
7 DISCH output Discharge. Open-collector/open-drain output used to discharge the external timing capacitor. Saturation voltage ≈50 mV at 1 mA; leakage ≈1 nA typical.
8 VDD power_in Positive supply, 2 V to 16 V (absolute max 18 V). Typical supply current 120 µA at VDD = 5 V.

Key specifications

Parameter Value
Manufacturer XINLUDA
Package SOP-8
Category RTC
Pins 8

Ordering variants

Same part, different packaging or reel option.

  • XL555
  • XL555XD555

CAD (KiCad official)

  • Symbol: XL555
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOP-8 (KiCad packages3D, STEP)

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: XINLUDA datasheet (16 pp, sha256 fde2e26f9d6cb995, retrieved 2026-08-17, tier: lcsc)
  • Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF